Species of plant
Juncus minutulus is a species of rush (Juncaceae) informally[1] referred to as minute rush, dwarf toad rush and annual rush.
Description
An annual, resembling and easily confused with a tiny Juncus bufonius with all parts smaller and with flowers rarely opening (cleistogamous): fruit capsule 2.5-3.0mm, stamens usually (2)3 instead of 6, anthers 1/4-1/3 x filaments (not 1/3-1 x), tepals usually shorter than 4mm, inner tepals acute (not long-tapering), 0-1(2) stem leaves, 1–3cm long.[2]
J. bufonius also has cleistogamous forms that can very much resemble this in these features therefore all features should be examined carefully (such as inner tepal tip shape).[3][4]
Range
Europe & North Asia, possibly cosmopolitan but reliable records are limited.[2][5]
Habitat
Similar to Juncus bufonius with which it may grow.
Turkey: Wet or temporarily wet, usually open soil, 0–1800 m.[6]
Spain: Wet pastures or those in temporarily flooded places, on somewhat saline soils; 0-2900m ("Pastos húmedos o de lugares temporalmente inundados, en suelos algo salinos; 0-2900 m").[4]
Istria: Wet roads, fields, ruderal regions.[7]
Siberia: In wet lowlands, along banks of water reservoirs.[8]
Further reading
- "The Juncus bufonius L. aggregate in western Europe", 1978 (Watsonia 12, 113-128), Cope, T.A. & Stace, C.A.
- "Revision of the Italian material of Juncus sect. Tenageia in the Herbarium Centrale Italicum: confirmations and novelties for Italy", 2022, Lorenzo Lastrucci, Valeria Gambirasio, Lorenzo Lazzaro, Daniele Viciani
- "The Revision of Juncus L. (Juncaceae) Genus in Central Anatolia, Turkey", 2015, Bülent Özbek.
- "The elusive Juncus minutulus: A failure to separate tetra- and hexaploid individuals of the Juncus bufonius complex in a morphometric comparison of cytometrically defined groups", 2011, Federick Rooks, Vlasta Jarolimova, Lenka Záveská Drábková, Jan Kirschner
References
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| Juncus minutulus | |
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| Juncus bufonius f. minutulus | |
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